202021020100 has 36 divisors (see below), whose sum is σ = 452527091968. Its totient is φ = 78201684000.

The previous prime is 202021020083. The next prime is 202021020101. The reversal of 202021020100 is 1020120202.

202021020100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (202021020101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32580936 + ... + 32587135.

Almost surely, 2^202021020100 is an apocalyptic number.

202021020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202021020100 is an abundant number, since it is smaller than the sum of its proper divisors (250506071868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202021020100 is a wasteful number, since it uses less digits than its factorization.

202021020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65168116 (or 65168109 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 202021020100 its reverse (1020120202), we get a palindrome (203041140302).

The spelling of 202021020100 in words is "two hundred two billion, twenty-one million, twenty thousand, one hundred".